Siloxane compound and polyimide precursor composition comprising same
US11820785B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2019 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Jan 28, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/103
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a siloxane compound having a novel structure, the compound not being reactive with a polyamic acid which is a polyimide precursor. In addition, provided is a polyimide precursor composition having improved storage stability by adding the siloxane compound as an enhancer for adhesion between a polyimide and a substrate made of an inorganic material. According to the present invention, provided is a multifunctional polyimide film having improved adhesiveness with a substrate made of an inorganic material while having improved optically isotropic characteristics and reduced residual stress characteristics with respect to a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.